1. Adenoid Cystic Carcinoma and Polymorphus Adenocarcinoma: An Immunohistochemical Comparison
   Nazanin Mahdavi et al, 2021, Iranian Journal of Science and Technology, Transactions A: Science CrossRef
2. Polymorphous adenocarcinoma of the salivary glands: reappraisal and update
   Vincent Vander Poorten et al, 2018, European Archives of Oto-Rhino-Laryngology CrossRef